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Gentamicin Bladder Instillation Trial

G

Gillette Children's

Status and phase

Unknown
Phase 4

Conditions

Urinary Tract Infections

Treatments

Drug: Gentamicin
Drug: Placebo

Study type

Interventional

Funder types

Other

Identifiers

NCT01884467
1210M21603

Details and patient eligibility

About

Recurrent UTIs are common among patients on IC. These create significant patient morbidity and healthcare burden. In desperation, many physicians prescribe prophylactic oral or intravesical antibiotics. This practice is common among our Gillette clinic patients. However, the benefit is unclear and the risks are not insignificant. As such, practice variation is significant. In order to better define the evidence for or against gentamicin bladder irrigation and thus inform clinical practice both locally at our Gillette urology clinic and for practitioners at large we will pursue the following specific aims:

  1. Compare rates of symptomatic urinary tract infection and asymptomatic bacteriuria among a population of Gillette patients on IC with and without gentamicin bladder instillation.
  2. Compare antibiotic resistance rates among a population of Gillette patients on IC with and without gentamicin bladder instillation.

Full description

In the Gillette Lifetime Urology clinic, gentamicin bladder instillation (GBI) for UTI prophylaxis is common practice among our neurogenic bladder patients in IC. However, as previously shown, the evidence supporting this practice is mixed. Potential risks of this practice include wasted costs, wasted materials, wasted time and growing antibiotic resistance. Potential benefits include reduced use of systemic antibiotics, a reduction in symptomatic UTIs and fewer hospitalizations for febrile UTIs. We seek to define the evidence for or against this practice by completing a double-blind randomized controlled trial of GBI vs. NS instillation. Such a trial would benefit our Gillette patients and the community of patients on IC worldwide.

Recurrent UTIs are common among patients on IC. These create significant patient morbidity and healthcare burden. In desperation, many physicians prescribe prophylactic oral or intravesical antibiotics. This practice is common among our Gillette clinic patients. However, the benefit is unclear and the risks are not insignificant. As such, practice variation is significant. In order to better define the evidence for or against gentamicin bladder irrigation and thus inform clinical practice both locally at our Gillette urology clinic and for practitioners at large we will pursue the following specific aims:

  1. Compare rates of symptomatic urinary tract infection and asymptomatic bacteriuria among a population of Gillette patients on IC with and without gentamicin bladder instillation.
  2. Compare antibiotic resistance rates among a population of Gillette patients on IC with and without gentamicin bladder instillation.

Enrollment

24 estimated patients

Sex

All

Ages

16+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  1. Patients (>=16 years of age) with any diagnosis on IC of the bladder.
  2. Patients may catheterize either thru the urethra or a stoma (e.g. Mitrofanoff).
  3. A history of recurrent symptomatic UTI's (at least 3 per year).
  4. Patient must be able to travel to Gillette's Lifetime clinic for quarterly urine cultures
  5. Patient must have an "informed other" that can supplement any missing study information (incident UTI, treatment information, etc.)

Exclusion criteria

  1. Patients currently on oral or intravesical antibiotic prophylaxis refusing to or not able to discontinue prophylaxis.
  2. Patients colonized with gentamicin-resistant bacteria on baseline urine culture or a gentamicin allergy.

Trial design

Primary purpose

Prevention

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

Triple Blind

24 participants in 2 patient groups, including a placebo group

Gentamicin
Experimental group
Description:
Intervention: Gentamicin; Dosage form: 120mg reconstituted in 250cc of normal saline; Dosage: 30mL; Frequency: nightly instillation into bladder (to remain overnight until draining it out in morning); Duration: 1 year
Treatment:
Drug: Gentamicin
Placebo
Placebo Comparator group
Description:
Drug: Normal saline; Dosage form: N/A; Dosage: 30 mL; Frequency: nightly bladder instillation; Duration: 1 year
Treatment:
Drug: Placebo

Trial contacts and locations

1

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Central trial contact

Meghan E Munger, MPH; Kari A Williams, MPH, CCRC

Data sourced from clinicaltrials.gov

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